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I am having a Red Hat 6.7 running on VM which I updated with the latest version kernel-2.6.32-573.26.1.el6.x86_64. but after this update I received the below error:

kernel panic-not syncing: VFS: unable to mount root fs on 
unknown block(0,0)

Previous version was kernel-2.6.32-573.22.1.el6.x86_64 .

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  • Can you get to the grub menu? Hold shift during boot if its not configured to show a menu. What have tried? Rescue mode, previous kernel?
    – Argonauts
    May 6, 2016 at 4:45
  • Its working on the previous kernel, and I found that there is no initrmfs image on the system. and there is no initramfs line in the grub.conf file
    – AReddy
    May 6, 2016 at 4:48

1 Answer 1

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I have booted my system with my previous kernel which is working fine. while troubleshooting the system we found that there is no initrmfs image on the system and there is no initramfs line in the grub.conf file.

I have created the image with the below command and edited the grub.conf file

# mkinitrd /boot/initramfs-2.6.32-573.26.1.el6.x86_64.img 2.6.32-573.26.1.el6.x86_64

After this change the system is working fine. possible bug from Red Hat.

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